Pump and motor.



H. S. HELE-SHAW P. L. MARTINEAU.

PUMP AND MOTOR.

APPLICATION FILED APIL?, 1911.

Patented Nov. 1'1, 1913.

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m W mw m I, vl m UWM H. S. HELE-SHAW P. L. MARTINEAU. PUMP AND MOTOR. APPLIGATION FILED APRJI, 1911.

1077,979 Patented Nov. 11, 1913.

4 SHEETS-SHEET 2.

Qwf O- H. S. HELE-SHAW P. L. MARTINEAU.

PUMP AND MOTOR. APPLICATION FILED ANL?, 1911.

1,077,979, Patented Nov.11,1913.

4 SHEETS-s111121' 3.

H. S. HELE-SHAW & F. L.Y MARTINEAU.

PUMP AND MOTOR.

APPLICATION FILED APRJI, 1911.

Patented NOV. 11, 1913.

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piston and its connections.

intacta n r ED HENRY SELBY HELE-SHAW .AND FRANCS LEIGH MARTINEAU, OF LONDON, ENGLAND.

PUIVI'P AND MOTOR.

To' all whom t may concern Be it known that we, HENRY SELBY HELE- SHAW and FRANCIS LEIGH MARTINEAU, both of London, inthe countyot London, England, have inventedcertain new andlu'seul Improvements in Pumps and Motors, of which the following is a speciication. K

This invention relates to improvements in pumps and motors and has reference tothat form of apparatus wherein radial pistons cooperate without an eccentric stroke controllin and varying ring. ur invention' consists particularly in certain improvements which render the apparatus more eiiiciont in its operations.

Among the morev important features ot the invention is the employment o-cap pistons in combination with rollers or slippers carried by them and operating in conjunction with the particular construction or stroke varying ring 'or drum-having its sli per orroller paths arranged on either si e of the cylinders; said varying ring being of inclosed form whereby the working parts of the apparatus are automatically andA ef- `iectively lubricated although the outer casing is empty and the loss due to the usual c'l'iurning of oil in the case is entirely eliminated. The construction of the central valve and its connections of the form shown, is

v also of importance, said valve yhaving a channel in its diaphragm for establishing a circulation of oil for lubricating between. the

valve and the cylinder body, and a suitable' oil reservoir is provided into which oil leads and from which excess of oil is conducted by 'centrifugal force to supply the in- Side of the rotating inclosed stroke varying ring.

In order that the invention maybe more readily understood and ,carried into effect, reference is herebymade to the accompanyine drawings whereinigure 1 isan elevational view `partly in section of a pump constructed in accordance with our invention. Fig. 2 is a side elevational view thereof partlypin section. Fig. 3 is a sectional view of the central valve at right angles to the diaphragm. Fig. 4 is a sectional view through the diaphragm ofthe central valve illustrating the means for insuring eflicient lubrication between the cylinder body and the valve 'upon which it rotates, and Fig. 5 is a sectional view illustrating a slightly modified method of fitting the Fig. 6 isa sec-- Specification of Letters Patent. Application filed April 7, 1911'. VSerial "No. 619,609.

Patented Nov. 11,1913.

tional side elevation view taken on the plane X-X of Fig. l.

Referring to these drawings 1 designates the central valve which is constructedfrom a cylinder of metal, the inlet and outlet passages 2 and 8 being bored out longitudinally and the ports leading to these passages cut in the wall thus formed as will be clearly seen on reference to the drawing. To one end of this valve a double elbow or piece 4 is attached by means of iianges, and pipes may of course be connected to this elbow piece 4 in the ordinary way.

Upon the valve 1 a cylinder body sleeve 5 is rotatably mounted and at the thickened Vportion (i of this sleeve 'faces are cutequal in number to the number of cylinders required. ()penings (3I are provided to coincide vwith the ports of the valve 1 and recesses are also provided to form sockets to receive the inner open ends of the cylinders 7. These cylinders are each provided with side flanges 8 and when all the cylinders are in position, the ends of these side flanges 8 abut one against the other,'and the whole of the cylinders 7 are clamped together by the rings 9 on either side, which rings 'tit over the flanges S and are bolted together' as at 10. The open outer ends of the cylinders 7 vare closed lby the cap or sleeve pistons- 11 which slidably fit liquid tight upon 'them and these cap or sleeve pistons 11 carry preferably integrally with them, the trunnions 12 which serve to carry slippers 13 capable of angular movement upon the said trunnions. The same effect may however be obtained with pistons 11a working in the cylinders as shown in Fig. 5. slippers or rollers 13 are carried upon pins or trunnions 12a tensions 11b of the pistons, the floating ring 16 serving to maintain the whole in position.

The slippers 13or in some cases it may be preferable to use rollers-run ingrooves or paths 14 cut in the inner faces 15 of rings 16 which are bolted together by the bolts 17 In this case the which pass through the ex'- l Yu located on either side, the Whole boing slidable Within limits to regulate the stroke,- the bearing being carried by blocks 19 slidable between the slidebars or guides 20 carried by or integral with the Walls 21 of the outer casing. The outer casing comprises in addition to these side Walls 2l"the steel or approximately annular member 9.2 having integral with it the support base 23. A ball bearing Q-t is preferably interposed between the cylinder body sleeve 15 and the Wall of the casing, a cap 25 being utilized to hold the bearing in place. The central valve 1, it Will be-not-iced, has a solid end and the cylinder body sleeve is extended and serves to take the drive. The otherwise openv end of this sleeve is provided with a plug 2G and thus a reservoir 27 is formed between the end of this plug and the end of the valve 1. A. passage 2S is drilled in the diaphragm of the valve 1 and the reservoir can thus be filled through the branch 29 and leakage between the cylinder body sleeve 5 and the valve 1 will also help to kccp up the supply to this reservoir. lloles El() lead trein the passages 28 to supply liquid for lubricating purposes between the cylinder body sleeve 5 and the valve l. Excess of liquid contained in the reservoir 27 is by centrifugal force discharged through. the pipe 31 into the floating ring 16 and similarly excess of liquid in the ring 16 escapes through the bearings 18 into the outer casing and may be Withdrawn from time to time through an opening or openings such as indicated at 32. The operation of the apparatus Will be clear. The cylinder body sleeve 5 carrying the cylinders 7 is rotated and the cap or sleeve pistons 11 cooperate, through their slippers or equivalent devices 13 located in the paths 14, with the stroke varying or regulating eccentric ring 16 and thus reciprocating motion is transmitted to the said pistons and liquid is drawn into and discharged from the appara-tus in the manner familiar to those conversant with this type of apparatus.

What We claim as our invention and desire by Letters Patent is 1. A pump or motor comprising a central valve provided with ports for the influxand eiilux of fluid to and from the cylinders, cylinders rotatable about the said valve, pistons associated with thev cylinders, a rotateble liquid tight stroke controlling drum inclosing the pistons and outer ends of the cylinders, circular cam paths in either side of said drum and devices carried on either side of said' pistons operating without definite attachment in said ca paths substantially as specified.

2. A pump ormotor-compris'ing a central valve, cylinders rotatable about said valve, pistons operating in said cylinders, a rota- -table liquid tight stroke controlling drum lnclosing the pistons and outer ends of the cylinders, devices carried by the pistons co operating Without attachment With said drum and means for supplying lubricant to Vthe interior of said drum wherein said lubricant is maintained by centrifugal lforce and serves to effect and maintain lubrication substantially as specified.

A pump or motor comprising a central valve, cylinders rotatable about said Valve, pistons operating in said cylinders, an eccen'trically situated liquidtightv rotatable stroke controlling drum inclosing the pistons and outer ends of said cylinders and adapted to contain lubricating'oil, cam paths in either side of said drum, and devices carried by the pistons operating Without deiinite attachment in said cam paths substantially as specified. I

4. A pump or motor comprising a central valve, cylinders rotatable about said valve, pistons operating in said cylinders, a rotatable liquiditight stroke controlling drum inclosing the pistons and outer ends of the cylinders and adapted to contain. lubricating` oil, cam paths in thc walls ot said drum, devices carried by the pistons operating without definite attachment in said cam pat-hs and means for varying the eccentricity of the drum substantially as specified.

5. A pump or motor comprising a central valve, cylinders rotatable about said valve, pistons operating in said cylinders, a stroke controlling liquid tight drum inclosing the pistons and outer ends 'of said cylinders and adapted to contain lubricating oil, bearings carrying said drum, an empty casing in the side Walls of which said bearings are slidably mounted and means for sliding said .bearings and consequently said drum to vary the stroke of the pump or motor substantially as specified.

6. A pump or motor comprising a central valve, cylinders rotatable relative to said valve, pistons operating in said cylinders, a rotatable liquid tight stroke controlling drum' inclosing the pistons and outer ends of said cylinders with which drum said pistons coperate Without definite attachment, a lubrication reservoir adjacent the central valve and means for conveying the lubricant from the reservoir to the interior of the stroke conlrolling drum vvherein said lubricant is maintained by centrifugal force, substantially as specified.

7. A pump or motor comprising a central valve, cylinders rotatable about said valve, pistons operating in said cylinders, a rotatable liquid tight stroke controlling drum inclosing the pistons and the .outer ends of said cylinders with which drum the pistons coperate Without definite attachment, a lubrication reservoir adjacent the central valve Vand adapted to have its supply maintained by leakage, substantially as specified.

8. A pump or motori-,comprising an empty ling the drum inclosing the v al ve,

valve, cylinders rotatable relative to saidA Valve, pistons reciprocating relative to said cylinders,a rotatable liquid tight drum controllingthe reciprocation of said pistons, said drum inclosing the pistons and the outer ends'of said cylinders and containinglubricant maintained therein by centrifugal force substantially as speciied.

l0. A pump or motor comprising a central cylinders rotai able relative to said valve, pistons iecipi'oi'fatin relative to said cylinders, a rotatable liqui tight `drum comprising' connected i similar members controlreciprocation of said pistons, said pistons and the outer ends of said cylinders and containnglubricant substantially as specified.

11. A pump or motor comprising a central valve, cylinders rotatable relative to said valve, plsto-ns reciprocatin relative to said cylinders, a rotatable liqui tight drum controlling the reciprocation 'of said cylinders,

A said drum inclosing the pistons and the outer ends of said cylinders and containing lubricant maintained therein by centrifugal force, an empty outer casing and bearings carried by said casing and rotatable supporting said liquid tight stroke controlling drum, substantially as specified.

12. A pump or motor comprising a central valve, cylinders rotatable about said' valve, pistons operating in said cylinders, a rotatable liquid tight stroke controlling drum inclosing the pistons and outer ends of the cylinders, devices carried by the pistons coperating without delnite attachment with said drum, means for supplying lubricant to the interior of said drum wherein said lubricant is maintained by centritugal force, and means for varying the position 'of said drum to vary the stroke of the pistons substantially as specied.

13. A pump or motor comprising a central valve, cylinders rotatable relative to said valve, pistons operating in said cylinders, a rotatable liquid tight stroke controlling druminclosing the pistons and outer ends of said cylinders with which dru'm said pistons cooperate without definite attachment, *a lubrication reservoir adjacent the centralvalve, vmeans for conveying the lubricant from the reservoir to the interior of the stroke cont-rolling drum wherein said lubricant is maintained by centrifugal force, and means' for -moving the axis of the drum to vary the stroke of the pistons, substantially as speciiied.

14. A pump or motor vcomprising a central valve, cylinders rotatable about said valve, pistons operating in said cylinders, a rotatable liquid tight stroke controlling drum inclosing the pistons and the outer ends of said cylinders with which drum the pistons coperate without definite attachment, a lubrication reservoir adjacentthey central valve and adapted to have its supply maintained by leakage, and means for initially charging said reservoir, substantially as specified.

15,. A pump or motor comprising a central valve, cylinders rotatable about said valve, cap pistons operating liquid tight upon said cylinders, a yrotatable liquid tight stroke controlling drum inclosing the pistons and outer ends of the cylinders, devices carried by the pistons coperating without definite attachment with said drum, means for supplying lubricant to the interior of said drum wherein said lubricant is maintained by centrifugal force, and means for varyin the position of said drum to vary the stro e of the pistons, substantially as specified.

In testimony whereof We affix our signatures in presence of two witnesses.

HENRY sELBY HELE-SHAW. FRANCIS LEIGH MARTINEAU.

Witnesses ALFRED AUGUSTUS THORNTON, H. D. JAMESON. 

